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An aluminum joint is clamped using an M8 x 1.25 class 10.9 fastener with rolled threads; the bolt was initially tightened to 80% of its proof load. Joint stiffness is twice that of the bolt. A cyclic external tensile service load that fluctuates between 0 and 5 kN is applied to the bolted joint system. bolt for infinite life, with 50% confidence level. The joint operates at room temperature. Determine the fatigue safety factor of the Hint: check also for bolt yield and joint separation under the cyclic ext on your results) ernal load, and comment
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